Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Extremely wide field
Ultra-Wide Field of the galactic disk, testing my equipment, Björn

Ultra-Wide Field of the galactic disk, testing my equipment

Revision title: 2023 Reedit

Ultra-Wide Field of the galactic disk, testing my equipment, Björn

Ultra-Wide Field of the galactic disk, testing my equipment

Revision title: 2023 Reedit

Equipment

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Acquisition details

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Description

I've chosen to get my star tracker out again these days and try to perform an ultra-wide angle image of the sky. I freely admit that I'm missing the experience of editing these sorts of images as I am usually doing images through telescopes with focal lengths of 300mm up to 2000mm and the impressions are much more different.
I assume there are four factors which give me concern about the image processing:
  • stars are highly undersampled
  • star shapes are horrible towards the edges, which require croping (on a telescope, I would probably send it right away to the trash)
  • huge gradients from all sides which I don't see in these extremes on telescope images
  • the noise behavior of my DSLR is completely different than my cooled CCD, which gives me a different view on the noise

Long story short, I'm trying to practice my wide-field imaging as it will be the (acceptable) way that I can do some of my hobby if I might travel for vacation.

Feel free to give me some feedback on my image. I've uploaded the full resolution image but I recommend viewing it such that it just fills your screen.

Björn

Comments

Revisions

  • Ultra-Wide Field of the galactic disk, testing my equipment, Björn
    Original
  • Ultra-Wide Field of the galactic disk, testing my equipment, Björn
    B
  • Final
    Ultra-Wide Field of the galactic disk, testing my equipment, Björn
    C

B

Title: My personal manual annotation

Description: I've added a manual annotation of the visible constellations based on the shapes used by the planetarium programs SkySafari and Stellarium. My goal was to illustrate what large region of the sky is imaged through this short focal length lens.
I hope I did my job well in finding the right stars and drawing the lines.

Uploaded: ...

C

Title: 2023 Reedit

Uploaded: ...

Sky plot

Sky plot

Histogram

Ultra-Wide Field of the galactic disk, testing my equipment, Björn

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